syntax keyword Constant nil
syntax match PrivateMember /\(_\?\w\)\+_\+\W/me=e-1
syntax match PrivateMember /\W_\+\(\w_\?\)\+\W/ms=s+1,me=e-1

highlight PrivateMember cterm=bold gui=bold ctermfg=DarkGrey guifg=#88aaaa
